State the minimum time interval that must elapse between the original sound and its…

PHYSICS · Single correct · CBSE · Physics · Sound · Sound

Problem

State the minimum time interval that must elapse between the original sound and its reflection for a distinct echo to be heard by the human ear. (a)

0.05\,\text{s}

(b)

0.01\,\text{s}

(c)

0.10\,\text{s}

(d)

0.06\,\text{s}